Winding drum



E. L. GARDNER.

WINDING DRUM.

APPLICATION FILED JANA, 1922.

Patented Nov. 14, 1922 INVENTOR. 27 9 77 Aim/Y.

4 Patented Nov. 14, 1922.

omrsn staresrAreNr oer-"ice.

EDGAR L. GARDNER, OF ROCHESTER, NEW YORK, ASSIGNOR TO PULLMAN MFG. COMPANY, OF ROCHESTER-NEW YORK, A CORPORATION OF NEW YORK.

WINDING DRUM.

Application filed January 4, 1922. Serial No. 526,988.

To all whom it'may concern:

Be it known that I, EDGAR L. GARDNER, a citizen of the United States, residing at Rochester, in the county of Monroe and 5 State of New York, have invented certain new and useful Improvements in Winding Drums; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference numerals vmarked thereon.

My present invention relates to winding and reeling, and more particularly, to the construction of spring actuated winding devices such as are used for winding the cords or tapes of sash balances and the balancing devices of folding beds, and the invention has for its object to provide a simple, yet strong and eflicient mode of construction for winding devices of this kind applicable to these and analogous uses, the improvements being directed in part toward facilitating the assembling of the device in the first instance. To these and other ends the invention consists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at th end of the specification. 3

In the drawings: H I Figure 1 is a central section of a winding device constructed in accordance with and Figure. 4 is aperspective view of one 'of 40 the housing parts hereinafter termed the yoke Figure 5 is a perspectlve new of another housing part hereinafter termed the shell;

Figure 6 is a side view of the device comcover plate which is about to be shoved in place; I

Figure 7 is an enlarged detail of the axial part shown in Figure 3;

Figure 8 is a front View of the attaching eye for the tape, and

Figure 9 is an enlarged section on the line:

9-9 of Figure 8.

illustrating one embodiment of my invenholding all of these parts together.

pletely assembled with the exception of the Similar reference numerals throughout the several views indicate the same arts.

Although m invention, as hitherto suggested, isapphcable to various uses, we will assume for the purposes of the present descrlption that it is to be used as a sash bal- 3.1108, Referring more particularly to-the drawings, the device comprises essentially a two Part casing for the moving part consisting of a shell 1 that is set into the window frame or other support and attachedin the manner hereinafter described. The shell is preferabl of the form shown in Figure 5 and provi es at-2 one of two opposed walls of the. complete casing. Suitably secured centrally in this Wall as by the riveted lugs 3 I (Figure 7) is a split tube 4 forming a hub. 'In the method of assembly there is firstjinsorted in this shell a cylindrical drum 5 having a single head 6 and an 0 en side that is applled'agalnst the closed si e 2 of the shell. The head 6 1s PI'OVlCled. with a central bore formed by striking up a collar 7 from thesheet material of which the drum is preferably made and this collar receives a bearing in the end of the hub 4, as shown in Figure 7. To reinforce this bearing connection I 'swage into this collar 7 an annular reinforcmg member or washer 8.

After the drum 5 is thus put in-"place i apply to the shell 1 a sheet metal yoke 9 that embraces'the shell and the connecting portion 10' of which closes the open en thereof shown in Figure 5'while one of the .sideplates-ll which for convenience I have termed a bearing plate, partially closes the open side of the shell and-provides a wall opposite the wall 2. -Both of the plates-of" the yoke are perforated as at 12 and a fas tener 13 is" next appliedto extend through I the yoke, the reinforcing member 8 and collar '7, the hub 4 and the Wall 2 ofthe shell This fastener may! be in the form of a bolt or:

rivet as shown and it constitutes a spindle The drum 5 isspring actuated through the provision of a winding spiral s rlng 14 con tainedtherein in the manner 0 an ordinary clock spring, the inner end be ng h oked end being suitably attached at to the periphery'of the drum, as shown inFigure 1'.

The sash cord or tape 16 usually of thin metal is, wound upon the exterior of the drum 5, and the end passes out through an opening 17- in the front or connecting port1on 10 of the yoke-9, which opening is slotted to the edge of the yoke with diverging walls that converge'upwardly and guide the tape onto the drum. As the tape is drawn out through the lowering'of a; window or otherwise, it moves against the opppsition of the spring 14: which is thus enerk gized and takes up the tape when the latter is released as by raising a window.

' Of course the spring 14 must always be under some tension even when the tape is and in making balances for folding beds, for instance, where a very strong spring is ref quired, difliculty' has hitherto been experienced in putting the spring drum under ten sion while assembling the casing about it. With the present invention when the device 5 is assembled as so far described, the drum.

5' is partially closed due to the fact that the bearing plate 11' of the yoke only partially covers the open side of the shell 1 and the drum may be' wound and conveniently clamped against movement by pressing witha suitable device against the head 6 of the drum and the opposite side of the shell, all of which is necessitated during the attachor enlargement 18 on its free end will permit the clamp may be removed and the housing of the drum completed.

This last step is accomplishedthrough the provision of a flanged cover plate 19 having a slot 20 extending through its center. ll

' slide this plate into place beneath the bearing plate 11 of the yoke and between it and the head 6 of the drum until its square edge abuts the connecting portion 10 of the yoke whereby, because of the slot 20, the cover plate straddles the fastener .13 and com pletely closes the remaining portion of the the winding device in place on its support,

. and which securing means at the same time holds the structure together.

taching means 18 at the free end of the tape 16 to connect the latter to the window sash or other moving part is preferably of the form shown in Figures 8 and 9 wherein a slot 24 in the shank of the eye divides it into aeaaet two bars 25 and 26. 'lhe'simple means of I attaching the tape of pliable metal is to pass it around the bar 26, and thenbetween the bar and in a reverse direction around .bar 25 p as shown in detail in Figure 9, the

d being flattened down and requiring of a spring drum arranged to turn between the walls and having a sheet metal head provided with an inwardly projecting collarstruck from, the" material thereof, said collar having a bearingin the end of the hub, and a reinforcing member swaged into the interior of the collar. wound upon the drum to the fullest extent,

the walls and having ta sheet metal head 'provided with an inwardly projecting collar struck from the material thereof,csaid col-.

lar having a bearing in the end of the hub, an annular reinforcing member swaged into the interior of the collar and a spindle con necting the walls and extending through the hub, collar and-reinforcing member and furnishing a bearing for the latter.

' 3. In a winding drum, the combination with a casing embodying a: shell having an rum journaled in theshell, of a bearing plate partially covering the open side of the shell, a fastener extending through the said plate, shell and drum and a cover plate cooperating with the bearing plate to completely house the drum within the shell plate, and adapted to be applied last after the other parts have been assembled.

4:. In a winding drum, the combination with a casing, embodying a shellhaving an open side and a closed side and a spring with a casingembodying a shell having anopen side and a closed side and a spring drum journaledin' the-shell, of a hearing The enlargement forming an eye or atplate partially covering the open side of the shell, a fastener extending through the said plate, shell and drum and a cover plate cooperating with the .bearin plate to completely house the drum" within the shell plate, and adapted to be applied last after 0 en side and a closed side and s ri "ment of-the tape 16.- After the tape has d p ng been applied and reeled in as far as an eye 'to receive a securing device looking them together and by means of which the, structure may be mounted upon a support.

the combination 6. In a winding drum,

with a casing embodying a shell having an open side and, a closed side and 'a'spring drum journaled in the she(l)lti of a'yoke embracing the shell and emb ying a bearing plate partially covering the open side of the.

shell, a fastenerextending thropgh the yoke,

shell and drum, and a cover plate eooperating with the bearing plate to completely 1.; 1

"parts have been assembledf i 7. In a winding drum, the combination house the lwithin the shell plateand f adapted to be applied last after the other with a casing embodying a shell and as ring drum gjournaled therein, of a yoke em racing the shell and having an opening in. the

connecting portionthereof, said opening having diverging lateral walls extending to one end of the yoke, a .-f astener extending wound onthe' drum to passgout through the opening and along "between" the diverging j walls and in 'theplanefthereof.

EDGAR ennnnnn 25 through the shell, drum and yoke," and a tape 

